Declaration

Discussion

This array can contain 0 or more bar items to display on the left (or leading) side of the navigation bar. Items can include fixed-width and flexible-width spaces. If the leftItemsSupplementBackButton property is YES, the items are displayed to the right (or trailing side) of the back button, otherwise the items replace the back button and start at the left (or leading) edge of the bar. Items are displayed left-to-right in the same order as they appear in the array. In a right-to-left user interface, the items are automatically flipped.

If there is not enough room to display all of the items in the array, those that would overlap the title view (if present) or the buttons on the right side of the bar are not displayed.

Sets the custom bar button item, optionally animating the transition to the view.

Beta Software

This documentation contains preliminary information about an API or technology in development. This information is subject to change, and software implemented according to this documentation should be tested with final operating system software.